зеркало из https://github.com/mozilla/gecko-dev.git
45 строки
1.4 KiB
C++
45 строки
1.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_ScrollStyles_h
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#define mozilla_ScrollStyles_h
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#include <stdint.h>
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// Forward declarations
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struct nsStyleDisplay;
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namespace mozilla {
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enum class StyleOverflow : uint8_t;
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struct ScrollStyles {
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// Always one of Scroll, Hidden, or Auto.
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StyleOverflow mHorizontal;
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StyleOverflow mVertical;
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ScrollStyles(StyleOverflow aH, StyleOverflow aV);
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// NOTE: This ctor maps `visible` to `auto` and `clip` to `hidden`.
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// It's used for styles that are propagated from the <body> and for
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// scroll frames (which we create also for overflow:clip/visible in
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// some cases, e.g. form controls).
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enum MapOverflowToValidScrollStyleTag { MapOverflowToValidScrollStyle };
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ScrollStyles(const nsStyleDisplay&, MapOverflowToValidScrollStyleTag);
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bool operator==(const ScrollStyles& aStyles) const {
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return aStyles.mHorizontal == mHorizontal && aStyles.mVertical == mVertical;
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}
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bool operator!=(const ScrollStyles& aStyles) const {
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return !(*this == aStyles);
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}
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bool IsHiddenInBothDirections() const;
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};
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} // namespace mozilla
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#endif // mozilla_ScrollStyles_h
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